hutchison



Nov. 1, 1927.

R. A. HUTCHISON, JR

OIL BURNER Filed June 1s, 1925 3 Sheets-Sheet 1 AHI 3 l l ll Il /l ill l||l1 .WIT/www: 5;; d() 0% n 'i Nav. 1, 1927. 1,647,732'

R. A. HUTCHISON, JR

OIL BURNER Filed June 18, 1925 3 Shaetsheet 2 MT N12-'5555 I N V EN TOR Patented Nom 1, 1927.

UNITED STATES ROBERT ANDREW HUTGHSF, 5513i., @El

OL BURNER.

.Application filed June 18, 1925.

My invention relatesto oil burners especially adapted for heating; purposes.

The objects are to provide a burner of simple and durable construction which will B burn oil without leaving` a carbon deposit or causing fluctuations in theflame, and which is practically noiseless.

These objects, and other advantageous endswhich will be described hereinafter', I attain in the following` manner, reference being had to the accompanying drawings in WlllCll i Figure 1 is acentral section thru a burner constructed in accordance with my invention illustratingl it in the action of burning oil, Figure 2 a section on line 2-2 of Figure 1, Figure 3 a side view of the burner looking,` from the right of Figure 1 showingl some of the parts broken away,

Figure 4 a central section thru an elementwhich forms a part of my invention, and Figure 5 a plan view partly broken of another element forming a part of my invention.

Referring; to the drawings, 1 indicates an air controlling member mounted on a sup-A port 2 and secured thereto by angle brackets 3. The air controllina` member is in the form of a ring casing,v 4. cast integral with an oil pan 5 spaced from the inner wall of the casing and connected thereto by integral tie bars 6 spaced around the periphery of the pan. The oil pan has an air conduit 7 extending upwardly to substantially near the top of the casing. Casingv l is provided with a mortis@ 8 in which the tenon of a bracket 9 is removably mounted. A gasifyinp; chamber 10, secured to the bracket so to be disposed substantially centrally above the casing, has an oil inlet pipe 11 connected to its bottom and extending upwardly a short distance into the gasifying chamber as shown at 12. This Iinlet pipe preferably passes thru the oil pan and is surrounded by a tube 13 to provide a dead-air space 14C around the inlet pipe for heat insulating purposes. rlhe oil passage thru the inlet pipe is restricted by a nipple 15 connected to` the lower end of the pipe. This nipple has a small orilice 16 which retards the flow of the oil thru the pipe when a sudden variation of pressure occurs in the gasifying chamber. An oilfeed valve 17 is connected by suitable littings with nipple 15 and aV feed line 18 which is adapted to be connected with a feed tank not shown.

Serial No. 37,917.

rFlic oil fed into the gasifying chamber thru the inlet pipe 11j is gasilied and passes out of the chamberthru an outlet pipe 19 connected with the top of the chamber and preferably diametrically opposite the inlet pipe. The outlet pipe passes downwardly outside of casing 4t, then beneath oil pan `5, A.. nozzle 2O is connected to the outlet pipe and extends upwardly short distance into air conduit 7. The nozzle is provided with a cleaningl rod 21 slidably mounted in the nozzle casing and adapted to be slid into the nozzle to clean the same by a lever 22 fulcrumed to a strip 23 depending from oil pan 5. rhe oil pan receives its oil for priming the burner thru a pipe 24- connected with feed line 18 by a valve 25 and suitable littinge.

rlhe burner is started by igniting the oil discharged into pan 5 thru pipe 2li and valve 25.` This heats the l.gasifying chamber` to a temperature at which the oil will be readily gasitied. Oil feed valve 17 is then opened to feed theproper quantity of oil into the `o;asifying chamber. The oil passes thru the `'orifice 1G and the inlet pipe 11 into the gasifyingg chamber and flows onto 'the hot inner. walls of the chamber, where it is gasified and then passes out of the outlet pipe 19 and upwardly thru nozzle 2O against the bottom of the 'gasifying chamber. The gras issuingfrom the nozzle becoming ignited by the flame of the oil in the pan, heats the gasifyinp; chamber. The flame impinging against the bottom of the chamber is deflected laterally as shown in Figure 1. The air drawn in thru air conduit 7 and between the casing t and pan 5, as shown by the arrows, mixes with the gas and causes complete combustion. The heat produced by the burner is regulated by the amount of oil fed to the gasifying chamber thru valve 17. The maximum amount of oil that may be fed is limited by orifice 16 and this amount will not flood the gasifyingchamber or cause it to function improperly while the burner is lit. The temperature of the gasifying chamber at which the burner Yfuncti ons most efiiciently is maintained by controlling;` the combustion of the gasified oil by admission of sufficient air for ignition at the proper point .and for complete combustion of the tfgasii'ied oil after ignition. FV hen this temperature is reached the normal functions of the burner are as follows:

The oil in pipe 11, being insulated from and pas, li, bocou ierature ot the gael ies i reachingI the hot inner walls ot the chamber7 is in'nnediately gasilied. The oil is thus 'grafly heated to its gasitying teme rc without danger oi: decomposing` it l c uien heating` known as cracking and the subsequent formation oiA carbon resultinn' from decomposition is avoided.

r he oil is gasiiied, the gases pass 'et pipe 19 and. the discharge oriliee 2O and issue the lctrom in a jet n striking the under side et the cnamber, spreads laterally7 and iaving mixed with a quantity of conduit 7, are then ignitwhich they receive a further sup- L 7 ply oi? air thru passano 6, which causes the .o gases to be completely burned as they flare around the chamber in a clean truite name.

For best results the size ot oriiice i6 for oilg and the size et discharge orifice azie 20 tor discharging` the gasiied ould` be such that a pressure ot about per square inch is maintained in the i cll amber under normal operation i i ner. have itound that by having l5 about ,028 in diameter and the fle orifice about il/Gil in diameter, this s casiliv maintained.

aerature et the `easitying chamber ic burner Yfunctions .most efficienttained by supplying the gases With 'i air thru conduit i' to eiiect ignier the hot gasilied oil strikes the the chamber and then further ust enough air thru passage 6 plete combustion ot the gasied f, oniing' ignited. Complete comrlicated by a clean white tlame under the gasifyin;- chamber c f oil and prevent this oseilthe oil and the consequent tlucn the size ot the flame.

i burner functions efficiently and does not cauce a carbon c eposit as is usual in the ordi type of burners. lt is practically noise a d requires little attention While 'llhe amount ot heat produced is ontrolled by valve l? without harmcting' the function of the burner.

have described my invention as am at liberty to make euch changes and alterations as fairly come Within the scoic ol" the appended claims.

Having thus described my invention, what l claim as neuT and desire to secure by Letters Patent is zl. in oil burner including a :fig-asi' chamber; an inlet conduit extending Way into the chamber thru its bottom; outlet conduit connected to the top of the chamber; a nozzle connected With the outlet conduit; an air conduit around the nozzle Yfor supplying` air to the gasiiied oil to cause ignition thereof after it reaches the chamber; a laterally extending oil pan around the conduit, and a ring` casing spaced `from the oil pan forming; an air passage Ier supplying air to the ignited gasilied oil to anse com plete combustion thereof.

2. fin oil burner including a gasitying chamber; an inlet conduit extending part- Way into the chamber and thru its l an outlet conduit connected with the chamber; a nozzle connected With the out duit for directing the gasilied oil aga bottom oit the chainbe 'g an con( founding` the nozzle tor supplying air to the gasitied oil tocause ignition thereof reaches the chamberg a laterally eitendingn oil pan around the conduitt le inst the 3. fin oil burner includinq a ggasiitying chamber; an inlet conduit extending part- Wa;7 into the chambffr and thru bottom; an outlet conduit connected with the chamber; a nozzle connected with the outlet eonduit for directing` the gasiiied oil against the bottom oit the chamber; an air conduit surrounding the nozzle 'for suppl?,v air to the Kgasilied oil to cause ignition thereoi` aiter it reaches the chamber g' a laterallyT extendiiigx oil pan around the conouit; integral tie bars entending` laterally from the pan, and a ring casing` integral with the tie bars and spaced from the pan to :ifo-rm an air passage torl supplying air to the gasitied oil becoming` ignited.

4. ln a burner, a rino' easing; an oil pan spaced 'from the casing to torni an air passaec; tie bars inteeral with the casing,` and above the oil conduit; an inlet conduit passing thru the oil pan and extending into the chamber thru its bottom; a tube secured to the bottom of the pan and surrounding the inlet conduit between the pan and the gast fyng chamber; an outlet conduit connected with the chamber, and a nozzle connected with the outlet conduit for directing the gased oil thru the air conduit against the bottom of the chamber.

In testimony whereof I have Signed my name to this specification.

ROBERT ANDREW HUTCHISON, Jr. 

